@-moz-document domain("wsmud.com") {
    @media screen and (min-width: 1200px){
    body {
        width:48%;
    }
    .container {
        flex: 1 0 auto;
        margin: 0;
    }
    .channel {
        position: fixed;
        top: 0;
        left: 0;
        width: 24%;
        min-height: 99%;
    }
    .content-message {
        position: fixed;
        top: 0;
        right: 0;
        width: 24%;
        bottom: 10px;
    }
    .map {
        position: fixed;
        top: 10%;
        z-index: 15;
        border-style: ridge;
        background: #000000f5;
        overflow: auto;
    }
    .WG_log {
        flex: 1;
        overflow-y: auto;
        max-height: 48em;
        width: calc(100%);
    }
    }
    }